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(No Model.) 2`sheet-Shee`t 1. J. RIEPPBL.

PUMP. No. 514,336. Y Patented Feb. 6, 1894.

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J. RIEPPEL. PUMP.

No. 514,336. f Patented Peb. 6, 41.894.

UNITED Sum-iTnsV PATENT Fries.

JOHN RIEPPEL, OF COVANESQUE, PENNSYLVANIA.

P U M P.

SPECIFICATION forming part of Letters 'Patent N o. 514,336, dated.February 6, 1894.

nppncaionndiugnst 2,1892. sesamo. 441.951. (Nomade.)

To @ZZ whom t may concern:

Be it known that I, JOHN RIEPPEL, a citizen of the United States,residing at Gowanesque, in the county of Tioga and State of Pennsyl-Vania, have invented certain new and useful Improvements in RotaryPumps; and I do hereby declare the following to be a full, clear, andexact description ot the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to an improved rotary pump, and it has for itsobject, among other things, to give the pump a maximum working capacity,to simplify the construction and lessen the number of parts, tofacilitate the operation or movement of the sliding abutmentor pistonand reduce friction between the same and its carrying drum or cylinderand to enable the packing of the piston to readily accommodate itself tothe wall of the 'containing cylinder or casing, to guard the piston orabutment against obstructions or foreign substances entering the pump orcontaining cylinder, with the liquid; and to prevent the accidentaldisplacement or losing ot the packing around the driving shaft of thepiston carrying drum, and to these ends the invention consists of thesundry combinations and arrangements of parts substantially as hereinafter more'fully disclosed and pointed out in the claims.

In the accompanying drawings: Figure lis a perspective view of myimproved pump, with one side of the containing casing or cylinderremoved. Fig. 2 is an internal View of the same, with the operativeparts removed. Fig. 3 is a. detailed perspective view of the slidingabutment or piston. Fig. et is a similar view of the piston or abutmentpacking. Figs. 5, 6 and 7 are detailed perspective views of theeccentric head with its stuihng box having a groove or channel, thestuiiing box gland, and the stuffing box nut, respectively.

In the embodiment of my invention, I employ a containing cylinder orcasing A which, however, is not an exact cylinder, being slightlyelongated or oval, and which is firmly bolted sidewise upon a base orfoundation A',

land having an inlet-pipe or port of., and an outlet pipe or port or',arranged at opposite sides of its center, near the upper portion orside, said openings or pipes, however, being interchangeable, as theinlet or outlet, this depending upon the direction of rotation of thedrum and its piston.

Covering the inner ends of the inlet and outlet ports, are series ofspaced-apart, obliquely arranged bars b projecting inward and, servingas guards for the abutment or piston and its carrying drum, against thelodgment thereon of foreign substances or obstructions entering thecontaining cylinder, with the liq. uid, any accumulations at this partof the cylinder, above the guards b, being readily removed through anopening in the cylinder covered by a plate c, removably secured to thelatter by suitable bolts.

B, is the inner cylinder or drum eccentric to the casing A, and whoseshaft B', is journaled upon suitable bearings CZ, secured upon the baseor foundation A', and adapted to be driven so as to rotate the drumeither Way by a fast pulley e, said shaft also bearingaloose pulley e',upon which the driving belt is shipped from the fast pulley in stoppingthe rotation of the drum, with its piston.

C, is the sliding abutment or piston carried by the drum B, rectangularin its general outlin e, and arranged in a slot c', extending clear"through the drum, permitting the abutment or piston to project beyondthe periphery of the drum, each way, so as to allow the packing thereofto touch the containing cylinder or casing constantly at oppositepoints, also the guard bars b, in its movement, and thus eect the wipingor cleaning from said packing any foreign substance or dirt that mayadhere to said packing. Thus the piston or abutment C, adapted to coveror align with the lower edges of the inlet and outlet ports a of, of thecasing or cylinder A, before opening the outlet port thereby avoidingthe use of valves, forces the liquid before it at the discharge oroutlet side of the casing or cylinder and draws, by suction the liquidafter it at the inlet or receiving side of the cylinder, thus pumpingthe liquid into the latter simultaneously with its delivery, giving thepump a maximum Working capacity. The sliding abutment or piston C, hasjournaled in its sides, at diagonally opposite points, near its outeredges, series of anti-friction rollers ff, bearing` or rolling upon theside walls of the containing slots of the piston, inthe drum, thusreduc- ICO ing friction at these points and facilitating the movement ofthe piston.

Seated in recesses g, in the outer edges of the piston or abutment C,are packing pieces C', themselves, having, recesses or concavities g',in their front edges which receive supplemental packing strips C2,convex or cylindrical in cross section and having central studs h,playing in the arc of a circle in slots h', in the bottoms of saidconcavities or recesses,to permit the packing pieces to readilyaccommodate themselves to the circular wall of the chamber of thecylinder or casing A, as the piston is carried around by the drum, andyet maintain liquid tight joint thereat which, as intimated, is theprimary object of the packing-strips.

In order to com pensate wear, when the packing-pieces become worn afterlong use, said packing pieces are cushionedupon springs i, preferablycoiled, suitably seated in sockets or recesses 1I', produced in thebacks of said packing-pieces and in the bottoms of the recesses g, inthe outer edges of the piston or abutment.

In the stuffing box j, of each head of the cylinder or casing A, is alongitudinal channel or groove k, which receives a stud or projection7c', on the outer circumference of the stuiiing box gland l, held in thestuffing box j, by the nut m screwed upon the latter as shown. Thisarrangement prevents the turning of the gland Z, and the consequentlosing of lits packing in such event, should the rotation of the drum,with its piston, be in the direction of the thread of the nut m.

I now claim- Y l. In a rotary pump, the combination of a containingcylinder or casing, a drum within the latter and the sliding or rollingpiston or abutment carried by said drum and provided With packingcarrying supplemental packing strips adapted to accommodate themselvesto the circular` Wall of the cylinder or casing, substantially as setforth.

2. In a rotary pump, the combination of a containing cylinder or casing,a drum Within the latter and the piston or abutment sliding through saiddrum and carrying packing pieces seated therein and having supplementalpacking strips convex or cylindric in crosssection and having studsengaging slots in the aforesaid packing pieces, substantially as setforth.

Intestimony whereof Iaftix my signature in presence of two witnesses.

JOHN RIEPPEL.

Witnesses:

N. H. SEELY, M. L. BARRETT.

